public void Steam2String(string id, uint accountId, Universe universe)
        {
            var expected = new SteamId(accountId, AccountType.Individual, universe, 1);

            Assert.Equal(expected, SteamId.FromSteam2(id));
            Assert.Equal(id, SteamId.ToSteam2(expected));
        }
        public void InvalidSteam2Id(uint id, AccountType type, Universe universe, uint instance)
        {
            var value = new SteamId(id, type, universe, instance);

            Assert.Throws <ArgumentException>(() => SteamId.ToSteam2(value));
        }